Scroll down to the bottom of the screen. There will be three options for you to choose from: "Clear History", "Clear Cookies", and "Clear Cache". You can simply clear all three by tapping each of them once and confirming the deletion

You can also clear your browsing history directly from the Safari browser. Start Safari and select "Bookmarks" at the bottom of the screen. Navigate to the history section and select it.

Your internet history should then appear on the screen. You can then clear out the history by selecting "clear" at the bottom of the screen. It will then ask you to confirm "clear history".